9888822500 has 30 divisors (see below), whose sum is σ = 21624882510. Its totient is φ = 3955528000.

The previous prime is 9888822473. The next prime is 9888822509. The reversal of 9888822500 is 52288889.

It can be written as a sum of positive squares in 5 ways, for example, as 3687889984 + 6200932516 = 60728^2 + 78746^2 .

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9888822509) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1975265 + ... + 1980264.

It is an arithmetic number, because the mean of its divisors is an integer number (720829417).

Almost surely, 2^9888822500 is an apocalyptic number.

It is an amenable number.

9888822500 is an abundant number, since it is smaller than the sum of its proper divisors (11736060010).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9888822500 is a wasteful number, since it uses less digits than its factorization.

9888822500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3955553 (or 3955536 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 50.

The square root of 9888822500 is about 99442.5587965233. The cubic root of 9888822500 is about 2146.4207618716.

The spelling of 9888822500 in words is "nine billion, eight hundred eighty-eight million, eight hundred twenty-two thousand, five hundred".